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Am I leaving HP on the table??

Old 07-12-2020, 09:19 AM
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Default Am I leaving HP on the table??


Iím trying to finish a pair of tall deck 615ís ASAP. I bought these cams because initially I was going keep wet exhaust. But the long tails wonít fit this transom without major surgery. Ordering dry tails now and thinking I should rethink the cams. Running dart 325ís with profiler sniper intakes and 1050 dominators.
CR should end up at 9.75
Any ideas would be much appreciated.
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Old 07-12-2020, 10:37 AM
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Thats not much cam for your cu in and heads........this might be a good choice.....Crane #139651 - 244/256 @.50" with .632/.632, 114
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Old 07-12-2020, 11:59 AM
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I was thinking they might not be enough, I’ve had to change direction a couple times, the lockdown in March made getting some parts slow.
My GM bow tie blocks got canceled so I went to Brodix. So now I have gen 4 blocks and gen 6 cams/timing chains. I think gen 6 cams are compatible as long as I have gen 6 timing chains.
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Old 07-12-2020, 12:00 PM
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I swapped 741 cams to 651s on 565 NA motors and really woke it up. I would think what Ken suggested above is a great starting place.
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Old 07-12-2020, 12:29 PM
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The cam you posted would be best for a 502-540 ci. I think you need significantly more cam for 615ci.
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Old 07-13-2020, 06:41 AM
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Way too small, definately go bigger otherwise your mmotor will peak just over 5000 rpms
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Old 07-13-2020, 09:10 AM
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I have the 651’s on the way.
THANK YOU
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Old 07-13-2020, 09:28 AM
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Originally Posted by hoodoo View Post
I have the 651ís on the way.
THANK YOU
you gonna dyno them ? Id like to see the #'s if you do
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Old 07-13-2020, 12:22 PM
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You might want to think about the getting the heads ported. The Dart 325's are a bit small for your combination.
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Old 07-13-2020, 04:29 PM
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Originally Posted by F-2 Speedy View Post
you gonna dyno them ? Id like to see the #'s if you do
yes as soon as I get them back
probably mid- late August, Iíll post #ís
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